Abstract: A process for the production of elastomeric polypropylene is disclosed. The process entails contacting the propylene monomer neat or in an unreactive hydrocarbon solvent, with a catalyst in a recirculated, stirred reactor at a temperature of about 60.degree. to 80.degree. C. thereby producing elastomeric polypropylene. The reactor contents are in the slurry/solution phase and are essentially free of catalyst poisons. The reactor is capable of recirculating contents that are very viscous such that the reactor contents are well mixed while a portion of the contents of the reactor containing propylene, any solvent, and elastomeric polypropylene are continually removed by the use of a high viscosity pump to recover the elastomeric polypropylene.

Abstract: The hot-melt adhesives of the present invention comprise a blend of at least one propylene/C.sub.4 to C.sub.10 higher 1-olefin copolymer having an acid number of at least 5, a tackifying resin, and a high density, low viscosity polyethylene wax having a melt viscosity of about 5 to 50 cp. at 150.degree. C. This hot-melt adhesive has a novel combination of properties including low melt viscosity and fast setting which meet the requirements necessary for use in rapid bonding or closing in low and high temperature applications.

Abstract: The invention relates to hot-melt pressure-sensitive adhesive compositions having a novel combination of properties. More specifically, the invention relates to polymerized terpolymer compositions containing n-butyl acrylate, N-vinyl-2-pyrrolidinone and styrene which provide pressure-sensitive adhesives. These terpolymer hot-melt pressure-sensitive adhesive compositions have good peel adhesion, excellent shear adhesion and permanent tack.

Abstract: Emulsifiable ethylene containing low viscosity polyolefin waxes having improved properties are provided by reacting low viscosity ethylene containing polyolefin waxes having less than 0.1 percent unsaturation with an unsaturated polycarboxylic component and an amount of peroxide added incrementally during the reaction wherein the weight ratio of unsaturated polycarboxylic component to peroxide is about 1/1 to less than about 5/1.

Abstract: This invention relates to a process for controlling viscosity during the preparation of modified or grafted low viscosity polyethylene and ethylene/alpha olefin waxes comprising reacting the low viscosity waxes with an unsaturated polycarboxylic component in the presence of a free radical source and at least one viscosity stabilizer.

Abstract: This invention relates to the emulsifiable polyolefin waxes which are prepared by reacting pivalolactone with a polyolefin wax containing carboxyl groups and the process for their preparation whereby the carboxyl groups are converted into carboxylate anions and grafted with pivalolactone to prepare emulsifiable waxes having improved properties. Polyolefin waxes which contain carboxyl groups include oxidized high, medium and low density polyethylene waxes, oxidized ethylene/alpha-olefin waxes, ethylene-acrylic acid copolymer waxes, ethylene-methacrylic acid copolymer waxes and high, medium and low density polyethylene, polypropylene and ethylene/alpha-olefin copolymer waxes which have been grafted or reacted with an unsaturated polycarboxylic component.

Abstract: The invention relates to hot melt pressure-sensitive adhesive compositions having a novel combination of properties. More specifically, the invention relates to polymerized terpolymer compositions containing 2-ethylhexyl acrylate, N-vinyl-2-pyrrolidinone and styrene which provide pressure-sensitive adhesives. These terpolymer hot melt pressure-sensitive adhesive compositions have good peel adhesion, shear adhesion and permanent tack.

Abstract: The hot-melt adhesives of the present invention comprise amorphous polyolefins grafted with carboxyl monomers and modified with tetra alkyl ammonium hydroxide compounds and pivalolactone. These hot-melt adhesive compositions have a novel combination of properties such as elevated temperature shear properties.